S.I. Babusenko1, V.V. Kiryushkin2, A.V. Zhuravlev3

1−3 JSC RIE “PROTEK” (Voronezh, Russia)

Problem statement. One of the main information systems of autonomous ground and air transport platforms is a coordinate-time navigation support system based on widely used Ublox modules with advanced interference parrying algorithms. The consumers’ navigation equipment in dynamic environment is an object for destabilizing factors influence, but main danger is an intentional interference (jamming), its impact leads to GNSS consumers work area restriction. Therefore, the task of assessing a consumers’ navigation equipment noise immunity under the influence of jamming and dynamically changing environment is relevant.

Target. An experimental evaluation of noise immunity parameters for Ublox modules working in the search and tracking mode and using L1 C/A GPS signals under the influence of concentrated interference and comparison of the results obtained with the parameters of the optimal GNSS receivers potential noise immunity.

Results. An overview of NEO-M8 and ZED-F9P GNSS modules functional capabilities is given, and the instrument-measuring test bench for determining the suppression coefficients under the influence of harmonic, Gaussian noise and phase-code-manipulated pseudo-random noise sequences is developed. Obtained indicators, relative to the reference ones, allows to quantifying the effectiveness of solutions implemented by the manufacturer to improve existing anti-spoofing and anti-jamming algorithms.

Practical significance. Given Ublox GNSS modules noise immunity experimental indicators are permits to increase the assessment reliability of GNSS consumers’ navigation equipment stable functioning zones under the influence of concentrated interference.

Babusenko S.I., Kiryushkin V.V., Zhuravlev A.V. Ublox global navigation satellite system modules noise immunity experimental evaluation. Radiotekhnika. 2021. V. 85. № 6. P. 77−85. DOI: https://doi.org/10.18127/j00338486-202106-13 (In Russian)

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